Trackball zoom and pan

[Itamar]

Hello
We use 
  Chart.XAxis.AllowZoom = true;
  Chart.XAxis.AllowPan = true;
   Chart.AllowTrackball = true;
   Chart.AllowPanDeceleration = true;
   Chart.Trackball.SnapMode = TKChartTrackballSnapMode.AllClosestPoints;
   Chart.Trackball.Tooltip.Hidden = true;


When we zoom on the chart and then start trackball
The pan is working instead of the trackball
How can we handle this? 
Best Regards 

[Deyan]

Hi,

Thanks for writing.

I have managed to reproduce the behavior that you describe. The reason for it is that the Pan gesture is handled with higher priority than the Trackball's. We will log this into our TODO list for fixing in an upcoming release.

I have added 1000 Telerik points to your account for bringing our attention to this issue.


Regards,
Deyan
Telerik by Progress

[Miro]

Please can you advice if the above issue was resolved. You have indicated that "We will log this into our TODO list for fixing in an upcoming release." but any updates since then "2017".

Thanks

[Didi]

Hi Miro, 

I have tested this scenario in our Chart Pan/Zoom demo in the Telerik UI for Xamarin.iOS examples and I cannot reproduce any issues when zoom and pan are applied and the trackball behavior is used.

I have added this code to the example:

chart.XAxis.AllowZoom = true;
chart.XAxis.AllowPan = true;
chart.AllowTrackball = true;
chart.AllowPanDeceleration = true;
chart.Trackball.SnapMode = TKChartTrackballSnapMode.AllClosestPoints;
chart.Trackball.Tooltip.Hidden = true;

 

Could you please elaborate more on the issue you are observing? If you can attach a sample repro project that could be of great help. Note that you should open a support ticket and attach the project there because in the forum only image attachments are allowed. 

Regards,
Didi
Progress Telerik

[Miro]

I am not able to resolve the issue in the iOS also i am not able to achieve the same in the android. So can you please just check the problem where i am facing it. You can check the code in the HRDashbaordPage.xaml and HRDashboardPageViewModel.cs". If you want to have a call with my team then also let me know, we will have it. 

I want to achieve that categorical axis should be scrollable so when there is a lot data then it should not be sticky it should be scrollable

[Miro]

Please can you advice how to share the code, because if I sent attachment as jpg it will not have enough for you to check or review.

[Didi]

Hi Miro,

Please open a support ticket and attach the project there, in the forum only image attachments are allowed. 

Include this information in the support ticket :

- Describe the issue and the exact steps to reproduce the issue.

- include on which iPhone device/simulator the issue observes.

- The used Telerik UI for Xamarin version 
- Are you developing a Xamarin.Forms app or Xamarin.Android and Xamarin.iOS apps. I am asking about this as you have also mentioned android. Please specify which Chart control is used? 

Regards,
Didi
Progress Telerik

[Miro]

- steps to reproduce the issue
-- Set the HRDashboardPage xaml to the default page for running the app
-- I am getting crash for the iOS in the 14.4 iOS simulator
-- For the android, it is not getting crash but pan/zoom effect is not working

- Telerik version which we have used in our app
-- Xamarin Forms  [ 4.8.0.1269 ]
-- Telerik UI For Xamarin [ 2021.1.224.1 ]

- Yes, we are developing a Xamarin Forms app.

- We are using a RadCartesianChart with Spline Series.

[Didi]

Hello Miro,

I have sent a reply to the support ticket. We can continue the communication there.

Regards,
Didi
Progress Telerik